A forced commutated inverter as a small series tap on a DC line

A forced commutated inverter used for tapping energy to a remote load from a DC line running through a rural area is described, and the results of a study conducted on Manitoba Hydro´s Electromagnetic Transients Program are presented. It is shown that a passive load requiring real and reactive power can easily be supplied. The tap itself is capable of responding quickly to changes of load without a communication link to the main converter terminals. The tap is able to recover easily from all anticipated faults and disturbances taking place in its own system as well as at the main converter terminals. It is noted that the series inverter tap with forced communication is not as sensitive to AC side disturbances as was the multiterminal system with a small parallel tap